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Incacetus broggii

Mammalia - Artiodactyla - Kentriodontidae

Taxonomy
Incacetus broggii was named by Colbert (1944). Its type specimen is AMNH 32656, a partial skeleton (skull and partial skeleton, including periodic), and it is a 3D body fossil. Its type locality is Santa Rosa, which is in an Aquitanian marine siltstone in the Chilcatay Formation of Peru. It is the type species of Incacetus.

Synonymy list
YearName and author
1944Incacetus broggii Colbert p. 200
1995Incacetus broggii Ichishima et al. p. 487
1996Incacetus broggii Cozzuol p. 325

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
RankNameAuthor
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
Cetacea()
Pelagiceti
Neoceti
Odontoceti()
infraorderDelphinida
familyKentriodontidae
subfamilyKentriodontinae
genusIncacetus
speciesbroggii

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
E. H. Colbert 1944A small cetacean showing a combination of both delphinid and ziphiid characters. Short, deep rostrum, with an open mesirostral groove. Palate flat and rather broad. A series of well-developed teeth in both maxilla and mandible; these teeth set in well-defined sockets. Skull but slightly assymetrical. Periotic similar to that in the Delphinidae, but tympanic typically ziphioid, with a strong external vertical fold. Small pterygoids, with external reduplication of the bones to form "pterygoid pockets" as in the Delphinidae. Posterior portion of mandibular ramus strongly convex as in the Ziphiidae. Cervicals free. Neural arches of dorsals and lumbars high, and spines inclined backward; centra of vertebrae elongated. Manubrium of sternum strongly bifid as in the Ziphiidae. Number of ribs not certainly determinable. Scapula ziphioid, similar to that of Mesoplodon, with three strong external ridges, including the scapular spine, and large, well-developed acromion and coracoid. Radius and ulna short and distally expanded, as in the Delphinidae. Carpus typically delphinid, with hexagonal bones, particularly the lunar. Dig- its unknown.